Retarus E-Mail Encryption

Secure email communication for companies and organizations: Encryption via PGP and S/MIME, digital signature, legal compliance, confidentiality.

Protect your email against unauthorized access

Companies use email for most of their internal and external communication. These emails often contain confidential information, personal data or other content not intended for the public eye. Sending an email, however, is like sending a postcard: everyone involved in delivery or transport can read or even change the content and no one would know. A letter sent in an envelope is even more secure than an email because a normal email is always exposed. Retarus E-Mail Encryption is a way to give your email an envelope and comply with the Federal Data Protection Act which requires suitable protective measures to be undertaken against unauthorized access when transmitting personal data. For it is only when suitable encryption systems are used that the right to privacy of correspondence, mail and telecommunications stipulated in the federal constitution is protected.

The standards: S/MIME, PGP, TLS, VPN

S/MIME and PGP are the two de facto standards that exist in the area of email encryption today. Retarus makes use of these two standards to offer a sophisticated service (SAAS) which falls under its E-Mail Security service. We also encrypt the transmission path itself: both using TLS, and according to individual rules. And of course, we connect your systems to Retarus’ data centers via VPN.

Maximum Usability

Retarus E-Mail Encryption can be used with all currently available email systems such as Microsoft Exchange or IBM Notes / Domino. Since Retarus takes over the complete key management, users simply continue to send and receive emails as usual. Administrative activities such as key management or user trainings are reduced to a minimum. Of course, you can also continue to use existing public key infrastructures with Retarus E -Mail Encryption.

Data processing according to local requirements

We process your data at our data centers located in Europe, Asia, Australia and the U.S. according to the data protection and privacy policies your company has in place. We can contractually agree upon where your data is to be processed, if your requirements exclude processing your data in certain data center locations.

Digital Signature

It goes without saying that Retarus E-Mail Encryption can be used to sign outgoing emails with PGP or S/MIME certificates. The service doesn’t just encrypt emails, of course. The signature enhances the security of email communication and boosts the confidence of your communication partners.

Secure Webmailer

The email encryption service can also be used over an integrated and secure web-based portal. Once the communication partner has the appropriate login information, he can access the confidential messages sent to him in his inbox on this portal. You are also out of harm’s way when it comes to legal issues because Retarus is responsible for satisfying the regulations set forth in the German Teleservices Act in the operation of third-party mailboxes. As an ISP, we are subject to the relevant regulations, not you. This keeps you from having to deal with messy legal consequences and makes it much easier to operate the internal company email infrastructure from a technical standpoint.

The benefits speak for themselves

  • Encryption via S/MIME, PGP and OpenPGP
  • Full support for the X.509 v3 standard, including self-signed certificates
  • Complete encryption of messages, including all attachments
  • Automatic digital signature for all outbound messages
  • Web portal for encrypted messages sent to recipients without their own encryption solution
  • VPN connection to Retarus’ data centers
  • Swift implementation without the need for any additional hardware or software
  • Centralized management of all internal and external keys reduces the burden on you IT department
  • Capable of functioning with any SMTP-based email system (such as Microsoft Exchange, IBM Notes/Domino)
  • Users send encrypted and signed emails from their usual email client

Case Studies: Each customer is a recommendation

Organizations from all industries and of all sizes utilize the Retarus communication platform to optimize their business and messaging processes. Our case studies provide examples of how organizations have utilized the Retarus suite of services to meet their companies messaging requirements.

We are here for you!

Do you have questions about Retarus, our products and services, or wish to receive further information? Your personal sales representative will assist you with any inquiries. Please contact us!


retarus Inc.
US Headquarters
300 Lighting Way
Suite 315
Secaucus, NJ 07093

+1 201 268 5950
+1 201 205 1606
Toll Free +1 855 462 0839
Toll Free +1 855 296 0858

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